Cita APA (7th ed.)

Heller, F. H. (1952). Introduction to American constitutional law: A selection of cases and materials. Harper.

Cita Chicago (17th ed.)

Heller, Francis Howard. Introduction to American Constitutional Law: A Selection of Cases and Materials. New York: Harper, 1952.

Cita MLA (9th ed.)

Heller, Francis Howard. Introduction to American Constitutional Law: A Selection of Cases and Materials. Harper, 1952.